What is it? Drill bit? Reamer?

[twinrider1]

Dril bit? Reamer? Combo bit/reamer? Are those coolant channels? Chip path?
Thanks.

EDIT: Here's a direct link if the picture isn't showing up for you. https://imgur.com/QZOAxUP

 

[Wanna Ride]

Pic’s not loading...

 

[DGersic]

Fancy drill bit.


Sent from my iPad using The Garage Journal mobile app

 

[Chucktin]

Seems to me I've seen Milling machine tools that look like that.

 

[Doug Arthurs]

I would like to help but dont see a pic

 

[JoeMcGov]

It's a proctor pygmy peevey.

 

[astroracer]

https://www.amazon.com/dp/B00P0EFDS0/?tag=atomicindus08-20
Sounds like a center drill. Used on drill presses, lathes, milling machines.

 

[jon72vega]

It was called a "dreamer" where I worked.
Has characteristics of a drill and a reamer, hence dreamer.

 

[PFSard]

twinrider1 >> I took the liberty of downloading your pic and uploading it to GJ, just in case .....

 

[pepi]

https://www.amazon.com/dp/B00P0EFDS0/?tag=atomicindus08-20
Sounds like a center drill. Used on drill presses, lathes, milling machines.

Not even close no cigar ....

Pep

 

[MrSurly]

My first assumption is that it's a marketing thing, some whiz-bang gadget promotional one-off, but with a Morse taper I'm thinking its not a cheap-o thing. Maybe some specialized lubricant channels for drilling some exotic material?

 

[seber]

It's hard to tell from a photo but if it is a dreamer the three flutes should be different diameters. Each one getting slightly larger to clean up the previous cut.

 

[Robert Haas]

It is a clearing bit, used in production automated lines. it clears chips and cleans up bores from the previous station/operation.



Of course I just made that up so you have that.

 

[Millwrong]

Are there no markings on it? What size is it? Can you describe the step I can see on the land near the tip?

 

[stock z/28]

My guess would be, a "a core drill" I have used quite a few similar ones in various sizes for drilling cast iron, usually cylinder heads or engine blocks, manifolds, etc..

Some are piloted to aid alignment.

The usually provide a fairly straight hole, but in my experience the bore still requires the use of a reamer to provide a tolerance .001" or less. Less is better.

Jeff

 

[OccupantRJ]

My guess would be, a "a core drill" I have used quite a few similar ones in various sizes for drilling cast iron, usually cylinder heads or engine blocks, manifolds, etc..

Some are piloted to aid alignment.

The usually provide a fairly straight hole, but in my experience the bore still requires the use of a reamer to provide a tolerance .001" or less. Less is better.

Jeff

Jeff is the winner! If it has holes on the cutting end it is an oil fed core drill for drilling castings.

 

[astroracer]

Not even close no cigar ....

Pep

Well excuse the hell out of me for trying to help... It was just a guess going on his description, I didn't see a pic and the link wasn't provided.

 

[stock z/28]

Jeff is the winner! If it has holes on the cutting end it is an oil fed core drill for drilling castings.

I have a few core drills that have coolant passages in them and obviously they would have to have a special chucking system to feed the desired coolant, and I dont have machinery equipped for that.

A lot of applications recommend no lube on some cast materials to keep the chips from collecting in the flukes.

If I needed a coolant I would generally use a mister or a flood system with the appropriate coolant.

Still just a guess thats what it is.

 

[manwithtools]

Jeff is the winner! If it has holes on the cutting end it is an oil fed core drill for drilling castings.

I don't see any holes in the cutting edge. It strangely does not look like a Morse tapper either. I see no tapper in the shank, and the tang does not look like a Morse bit profile either. It's a perplexing one to me.

 

[OccupantRJ]

We used the oil fed version where I worked to drill a cored hole in 642 silicon aluminum bronze castings. I went back and expanded that pic and it does not appear to be the oil fed version, so just a basic core drill. They are sometimes simply clamped into a v block pinch holder in a turret lathe. The shank is called an auto tang straight shank.

 

[stock z/28]

I don't see any holes in the cutting edge. It strangely does not look like a Morse tapper either. I see no tapper in the shank, and the tang does not look like a Morse bit profile either. It's a perplexing one to me.

As I was saying earlier most of the core drills I used on cast iron are ran dry and may not have coolant feed holes.

The shank is not tapered and I am not sure of all applications but I "think" the tang will fit a split style collet adapter for Morse taper (among others) that may or may not use a draw bar (my radial drill uses a draw bar with morse taper tooling) but Im not sure of the popularity of it.

 

[stock z/28]

We used the oil fed version where I worked to drill a cored hole in 642 silicon aluminum bronze castings. I went back and expanded that pic and it does not appear to be the oil fed version, so just a basic core drill. They are sometimes simply clamped into a v block pinch holder in a turret lathe. The shank is called an auto tang straight shank.

I can imagine that something that is a silicon bronze alloy may require coolant and possibly a fairly exotic coolant for machining. I may have drilled it before but nothing major. I used it mostly (in alloy form) for TIG and MIG welding. Some electrical fasteners. Mostly TIG.

 

[MShaw]

It is a sub land drill. The flutes can be ground to smaller diameters like a step drill. The shank is an automotive type, straight with a drive tang.

 

[manwithtools]

It is a sub land drill. The flutes can be ground to smaller diameters like a step drill. The shank is an automotive type, straight with a drive tang.

We have a winner, you can see in the OP's picture that part of the flute is ground away near the tip.

 

[stock z/28]

It is a sub land drill. The flutes can be ground to smaller diameters like a step drill. The shank is an automotive type, straight with a drive tang.

https://goodson.com/collections/core-drills-reamers


This type of reduced tip is what I have always used for piloting on existing holes, mostly on cyl heads.

 

[twinrider1]

Thanks for the info. No taper. 5/8" with the 1st inch stepped down to 1/2". The drive end isn't tapered either. No holes. The only markings are a number. Best as I can tell it is 2050-11822603. Alloy? Angle? Google didn't recognize it.

 

[MShaw]

The best part of a subland drill is that the smaller flute diameter can be ground all the way to the back of the flutes so it can be resharpened many more times. On a step drill when the step is sharpened it nicks into the smaller diameter so that once you sharpen it back the length of the original step the smaller diameter is gone and the drill is junk.